As a caveat to this review, I have not attempted any of the trips mentioned here. This book covers only FRESH WATER, and I ended up choosing a saltwater trip instead.
Alaska has some amazing sea kayaking, but you will not find it in this book. What you will find is a wide range of river and lake trips. On the easy end are short outings, some of them in and around Anchorage, that would fit easily into a family vacation from the Lower 48. On the tough end are very demanding trips up to a week long, such as the Yukon and Copper Rivers, that require much proficiency and skill.
In Paddling Alaska, you can drive to all the lakes and rivers described in this guide. This fact might sound unremarkable, but Alaska is mostly wilderness, with few highways. This is the first guidebook to organize journeys in this manner.